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Emailchemy vs Mail Backup X: catalog facts
Emailchemy	Mail Backup X
Paid Commercial software from Weird Kid Software.	Paid Free to try, with a paid licence to keep using it.
Windows, macOS, Linux	Windows, macOS
Reads many obsolete email client formats Runs on Windows, Mac and Linux	Supports many desktop clients and online mail services Archive viewer and format converter included
Paid software Aimed at migration and archiving rather than everyday email	Proprietary and paid after the trial Developer details are not clear from the site
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.